(D) According to Malus's Law,the intensity of transmitted light is given by $I = I_0 \cos^2 \theta$,where $\theta$ is the angle between the transmissi

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

The intensity of light becomes maximum twice and zero twice.

(D) According to Malus's Law,the intensity of transmitted light is given by $I = I_0 \cos^2 \theta$,where $\theta$ is the angle between the transmission axis of the Polaroid and the plane of polarization of the incident light.As the Polaroid completes one full rotation ($0$ to $2\pi$),the angle $\theta$ changes continuously.The intensity $I$ becomes maximum when $\theta = 0$ and $\theta = \pi$,and it becomes zero (minimum) when $\theta = \pi/2$ and $\theta = 3\pi/2$.Therefore,the intensity of light becomes maximum twice and zero twice during one full rotation.

Class 12 Physics Wave Optics Polarisation of Light and Malus' Law

Medium

Plane-polarized light passes through a Polaroid. While observing through the Polaroid,it is seen that when the Polaroid completes one rotation about the direction of light,which of the following is observed?

A
The intensity of light gradually decreases to zero.
B
The intensity of light gradually increases to a maximum and remains at the maximum.
C
There is no change in the intensity of light.
D
The intensity of light becomes maximum twice and zero twice.

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Physics Questions

Chapter

Wave Optics

Subtopic

Polarisation of Light and Malus' Law

$A$ $20 \ cm$ length of a certain solution causes right-handed rotation of $38^{\circ}$. $A$ $30 \ cm$ length of another solution causes left-handed rotation of $24^{\circ}$. The optical rotation caused by a $30 \ cm$ length of a mixture of the above solutions in the volume ratio $1:2$ is

DifficultKCET 2007

View Solution

$A$ source of light is placed in front of a screen. The intensity of light on the screen is $I.$ Two Polaroids $P_{1}$ and $P_{2}$ are placed between the source of light and the screen such that the intensity of light on the screen is $I/2.$ By what angle (in degrees) should $P_{2}$ be rotated so that the intensity of light on the screen becomes $3I/8?$

MediumJEE MAIN 2021

View Solution

How can it be determined whether a given light is unpolarized,plane-polarized,or partially plane-polarized?

Medium

View Solution

For light of intensity $I_0$,a polaroid is placed at an angle of $45^\circ$. What will be the intensity of the light passing through the polaroid after polarization?

Medium

View Solution

An unpolarized light beam of intensity $I_0$ is passed through a first polaroid $A$ and then through a second polaroid $B$. If the principal plane of polaroid $B$ makes an angle of $45^{\circ}$ with that of $A$,find the intensity of the emerging light.

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

Plane-polarized light passes through a Polaroid. While observing through the Polaroid,it is seen that when the Polaroid completes one rotation about the direction of light,which of the following is observed?

Similar Questions

$A$ $20 \ cm$ length of a certain solution causes right-handed rotation of $38^{\circ}$. $A$ $30 \ cm$ length of another solution causes left-handed rotation of $24^{\circ}$. The optical rotation caused by a $30 \ cm$ length of a mixture of the above solutions in the volume ratio $1:2$ is

How can it be determined whether a given light is unpolarized,plane-polarized,or partially plane-polarized?

For light of intensity $I_0$,a polaroid is placed at an angle of $45^\circ$. What will be the intensity of the light passing through the polaroid after polarization?

An unpolarized light beam of intensity $I_0$ is passed through a first polaroid $A$ and then through a second polaroid $B$. If the principal plane of polaroid $B$ makes an angle of $45^{\circ}$ with that of $A$,find the intensity of the emerging light.

Vedclass Test Series

Exam Paper Generator

Online Exam Module